1.Mary of have long hair. 2.so it is hard to tell whetther they boys or girls. they us me are is
问题描述：
1.Mary of have long hair. 2.so it is hard to tell whetther they boys or girls. they us me are is
them.be have句号后面是选的
答
什么意思?看不明白,排序吗?of后面填空，they后面填空，girls后面是选的1.Many of (them) have long hair。2.so it is hard to tell whether they are boys or girls.最后一句能写的更清楚吗？